• PNF and Movement
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• 제20권3호
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• pp.351-358
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• 2022

Purpose: This study aims to determine the correlation between the effects of contract-relax-antagonist-contract (CRAC) and contract-relax (CR) forms of proprioceptive neuromuscular facilitation (PNF) stretching on balance during single-leg standing in elderly people. Methods: The participants were 20 elderly people in healthy condition and divided equally into two groups: the CRAC stretching group and the CR stretching group. Subjects were made to walk on a treadmill for 6 minutes before the stretching as a warm-up. CR and CRAC stretching were performed on the soleus. The dependent variables used to assess single-leg standing balance were overall stability(OSI), anterior/posterior(A/P) movement, and medial/lateral(M/L) movement. The statistical methods used to assess the differences between groups were verified using the Mann-Whitney U test and the Wilcoxon signed-rank test. Results: The CRAC group had significantly increased OSI, A/P and M/L after the PNF stretching intervention (p < 0.05). The CR group had significantly increased OSI and A/P after the PNF stretching intervention (p < 0.05), but M/L did not significantly increase (p > 0.05). There was no significant difference in stretching between CRAC and CR (p > 0.05). Conclusion: The results of this study revealed that CR and CRAC PNF stretching improved single-leg standing balance. CARC stretching before exercise is helpful for elderly people, as it improves balance.

• Design & Manufacturing
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• 제17권1호
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• pp.40-47
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• 2023

Macular degeneration and glaucoma are representative age-related retinal diseases that rank second and third in the prevalence of retinal diseases, and are a kind of degenerative neurological disease. Irreversible visual acuity and visual field damage may occur, and the number of patients is rapidly increasing as the population ages. Since this retinal disease is a chronic disease, continuous drug treatment is required. There are various drug delivery methods for treatment, but direct injection of the drug into the intravitreal is the most effective for continuous delivery of the drug over a long period of time. In order to solidify Dexamethasone, a retinal disease treatment, and insert it into the primary intravitreal, it is important to develop a technology to miniaturize the treatment and an applicator to deliver the treatment. In this study, a mold technology was developed to integrate the cannula and hub, which are one part of applicator. In addition, surface treatment was performed on the outside of the cannula to improve the bonding strength between the cannula and the hub, and the bonding strength according to each condition was analyzed through a tensile test.

• KSBB Journal
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• 제10권5호
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• pp.561-567
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• 1995

활성산소 소거 효소인 superoxide dismutase (SOD)가 결핍된 효소 변이주들을 대상으로 하여, 활성산소 유발물질인 paraquat을 배지에 첨가하여 배양하면서 산소 독성을 관찰하였다. 호기 상태에서 는 MnSOD (mitochondria SOD) 결핍 효모는 CuZnSOD (세포질 SOD) 결핍 효모보다 성장이 많 이 저하되었지만, 혐기 상태에서는 이들 SOD 결핍 효모 모두 성장 속도에서 야생 효모와 큰 차이를 보이지 않았다. Paraquat으로 처 리한 결과, 호기 배양 에서 CuZnSOD 결핍 효모는 O.OlmM 이상에서 성 장하지 않음을 알 수 있었다. 따라서 O.OOlmM paraquat을 배지에 첨가한 후 호기적으로 배양하면서 세포내 성분의 변화를 관찰하였더니, CuZnSOD 결핍 효모에셔는 catalase 역가가 떨어진 반면 glutathion peroxidase 역가와 세포막 지질의 과산 화물이 증가하였으며, MnSOD 결핍 효모에서는 catalase 역가와 glutathion peroxide 역가가 모두 조금씩 증가하면서 세포막 지질의 과산화물은 그다지 변화하지 않았다. 이러한 사실로부터 CuZnSOD 가 없는 경우 활성산소 소거계로써 catalase 보다 glutathion peroxidase가 훨씬 활성화되어지지만, 이렇게 활성화된 glutathion peroxidase로는 세포질내 산소 radical을 완벽히 제거하는데에는 다소 불충분 하다는 사실을 알 수 았었다. 한편, 혐기적 배양에서 는 SOD 결핍 효모들의 catalase 역가는 모두 감소 한 반면, glutathion peroxidase 역가는 다소 증가하였고, 또한 세포막 지질의 과산화물은 다소 감소하는 추세를 보였다. 이는 혐기 상태에서 산소 radical 이 소량밖에 생기지 않으므로, 활성화된 glutathion p peroxidase에 의해 어느 정도 극복되어지기 때문인 것으로 사료된다. 두 집단 간에 어느 정도 방향성은 있는 것으로 판단된다.ds for eagerness for lasting life not only in this world but also in the other world., Keun-Kap, Scarf, Pee-Bak, Hung-Kap, Pok-Kap, Yang-Dang-Kap, We-Yo-Kap, Kum-Kap, and caries arms. Lower-level officials wore Pe-Bal, Kun-Mo, gae, won-leung, very small sleve jacket, a long coat reaching up to the knee length, slacks, belt, loin cloth and apron. 5) Children's bind their hair up angle shape and wore a half long jacket raching up to the hip and slacks. 나) Women's wear; 1. hair style and hair dress; 1) High rank women's hair style was very extravaganceful. They made their hair top knot (one, two, or more knots) and decoraed precious stone, pan shape head dress, wheel shape head dress, and flower shape precious stone decorated head dress. 2. Clothes ; 1) High rank ladi's wore Kun-Kyun attached jacket, and jacket sleeves decorated pleats, and pleats decorated long skirt, apron, back apron, knot belt, scarf, this type is the same

• Journal of Acupuncture Research
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• 제29권4호
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• pp.7-18
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• 2012

Objectives : The purpose of this study is to evaluate the effects of Miso facial acupuncture on facial reduction and improvement of skin condition. Methods : From March to May 2012, 20 women in their twenties to forties with no facial diseases were recruited. Miso facial acupuncture was performed on the both side of their face twice a week, total seven times. The 3D face photographs of each participant were checked 5 times ; before treatment, after 1st treatment, 4th treatment, 7th treatment and 10 days from the last treatment using RS-400FL(Morpheus Co. Korea) and REAL FACE. The surface distances of the 4 lines on the face were measured using Renai MEF program. The improvement of skin condition was evaluated by water content, trans epidermal water loss(TEWL), erythema index and melanin index using MPA 5. They were checked 4 times ; before treatment, 4th treatment, 7th treatment and after 10 days from the last treatment. We analyzed data using Paired t-test(p<0.05) and Wilcoxon signed rank test(p<0.05). Results : One case was dropped out due to pain and edema after 4th treatment. The surface distances of the 4 lines on face were significantly reduced and maintained after 10 days from last treatment. Water content was significantly increased and maintained after 10 days from last treatment. TEWL was significantly decreased. Erythema index was significantly decreased from the 3rd evaluations. Melanin index was slight decreased with no significance at the 2nd evaluations. Conclusions : These results show that Miso facial acupuncture can reduce sizes of the face and improve skin condition such as water content, TEWL and erythema index except melanin index.

• 한국산학기술학회논문지
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• 제19권2호
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• pp.293-301
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• 2018

본 연구는 다면재활프로그램이 산업재해근로자의 다차원 심리 변화와 역량강화, 직업복귀준비 및 작업능력에 미치는 효과를 알아보고자 하였다. 2017년 3월부터 9월까지 경남 창원에 위치하는 C병원에 입원한 산업재해근로자 12명을 대상으로 실시하였다. 다면재활프로그램으로는 주 2회 2시간씩 8주 동안 희망찾기프로그램과 주 5회 3~4시간씩 8주 동안 작업능력강화프로그램을 병행 실시하였다. 이 때 중재효과를 검증하기 위해서 다차원 심리검사, 역량강화척도, 직업복귀준비도 및 작업능력평가를 실시하여 윌콕슨부호순위검정으로 전 후 검사 결과를 비교하였다. 그 결과, 다차원 심리검사에서 불안, 우울, 신체화, 사회적 지지에서 유의하게 향상된 반면(p<.05), 분노에서는 유의한 차이가 없었다(p>.05). 역량강화척도와 직업복귀준비도에서는 유의미한 차이가 있었다(p<.05). 작업능력평가에서는 바닥에서 허리높이로 들기, 허리에서 어깨높이로 들기, 바닥에서 어깨높이로 들기, 옮기기, 밀기 및 당기기에서 모두 유의한 차이가 있었다(p<.05). 본 연구는 사회심리적 요소와 신체적 측면을 함께 고려한 다면재활프로그램이 산업재해근로자의 직업복귀에 있어서 다차원 심리의 긍정적인 변화, 역량강화, 직업복귀준비 및 작업능력에 효과적임을 알 수 있었고 직업재활의 효과적인 방법임을 제안한다.

• 한국학교ㆍ지역보건교육학회지
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• 제15권1호
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• pp.121-140
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• 2014

Objectives: Recently, the rate of death by chronic disease, is increasing steadily. To prevent this, the public health center will have taken a leading role in the local community medical business through an establish to the national health promotion act and an amendment to the law of public health center in Korea. Results: Accordingly this research, using the Pender's health promotion model which is related with subject health behavior who government employees serve at the public health center have taken important position in the local community health promotion, have comprehended the actual condition of health behavior. For increasing the health behavior practice of subject to comprehend the factor which have effect on health behavior practice, which can be a correct role model in the local community health promotion. A survey was performed on 406 government employees who serve at five public health centers in Seoul. The period of survey was from 25th October, 2010 to 15th November, 2010. The results of this study were summarized as below. 1. Work-related stress, perceptible beneficial obstacle, and self-efficacy were composed by 5 points measure. The results show those work-related stress were $3.06{\pm}0.469$, 74perceptible beneficial obstacle were $3.74{\pm}0.471$, and self-efficacy were $3.49{\pm}0.469$. 2. As for the health behavior by general characteristic, the results have specific differences on age, education level, state of marriage, rank of the position, field of the occupation and employment forms in statics analysis. 3. As for the past health behavior by health behavior characteristic, work-related stress have specific differences on the past frequency of drinking (p<.05) in statics analysis, perceptible beneficial obstacle have specific differences on the past frequency of having breakfast(p<.05), having snacks(p<.05) and doing exercise(p<.05) in statics analysis. Self-efficacy have specific difference on the past frequency drinking(p<.01) in statics analysis. 4. According to the correlation between the factors related with health behavior and health behavior, the health behavior have specific differences on perceptible health condition(p<.01), the past health behavior and perceptible beneficial obstacle(p<.05). Work-related stress and self-efficacy don't have specific relation in health behavior practice. 5. The factors, which effect on health behavior practice have specific differences on the past health behavior, employment forms and field of the occupations. The ability of explanation occupied 54.8% what explained of the health behavior practice by general characteristic, perceptible health condition, employment forms and perceptible beneficial obstacle. Conclusions: According to the correlation between the factors related with health behavior, the health behavior have specific differences on perceptible health condition(p<.01), the past health behavior and perceptible beneficial obstacle(p<.05). The factors, which effect on health behavior practice have specific differences on the past health behavior, employment forms and field of the occupations.

• 대한한의학회지
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• 제32권5호
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• pp.66-77
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• 2011

Objectives: This study aimed to make preliminary data through the bibliometric analysis of journals registered by national research foundations of Korea for the improvement of traditional Korean medical (TKM) journals. Methods: We collected 4,396 articles from the OASIS database, which is composed of articles published by TKM societies and institutes. First, we analyzed the 'authors by year', 'average authors per article', 'articles by institute' and 'authors by institute' to get the author-related conditions. Second, we analyzed the 'reference type', 'cited times', 'IF with self citation' and 'IF without self citation' to get the citation condition. Results: First, we found that the journal order of total authors was KAOOMP (2362), KOMS (1189), and KAMS (967), and of average authors per article was KAMS (5.29), KOIMS (5.25), and KOMS (4.75). Second, we learned that the journal order of occupied article ratio by high rank institutes was SCMS (92.4%), MAS (90.03%), and KOPS (87.22%) and of occupied author ratio by high rank institutes was KOPMS (96.55%), MAS (95.19%), and SCMS (93.85%). Third, we analyzed the most highly cited reference type by journals and we found that OMCS was books, SCMS was oriental medical journals and the other 10 journals were not oriental medical journals. Finally, we observed that the journal order of self citation ratio was SCMS (16.79%), KMAS (11.77%), and OOGS (11.67%) and also that the IF order was KAMS (0.675), OOGS (0.546), and KAOH (0.430). Conclusions: Through this study we found that TKM research leans too much toward on oriental medical universities, so we insist that TKM R&D institutes must be expanded. We also found that the self citation ratio was high in TKM journals, so the ratio must be decreased to improve the quality of the TKM journals.

• Journal of Communications and Networks
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• 제12권4호
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• pp.289-307
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• 2010

The problem of model selection arises in a number of contexts, such as subset selection in linear regression, estimation of structures in graphical models, and signal denoising. This paper studies non-asymptotic model selection for the general case of arbitrary (random or deterministic) design matrices and arbitrary nonzero entries of the signal. In this regard, it generalizes the notion of incoherence in the existing literature on model selection and introduces two fundamental measures of coherence-termed as the worst-case coherence and the average coherence-among the columns of a design matrix. It utilizes these two measures of coherence to provide an in-depth analysis of a simple, model-order agnostic one-step thresholding (OST) algorithm for model selection and proves that OST is feasible for exact as well as partial model selection as long as the design matrix obeys an easily verifiable property, which is termed as the coherence property. One of the key insights offered by the ensuing analysis in this regard is that OST can successfully carry out model selection even when methods based on convex optimization such as the lasso fail due to the rank deficiency of the submatrices of the design matrix. In addition, the paper establishes that if the design matrix has reasonably small worst-case and average coherence then OST performs near-optimally when either (i) the energy of any nonzero entry of the signal is close to the average signal energy per nonzero entry or (ii) the signal-to-noise ratio in the measurement system is not too high. Finally, two other key contributions of the paper are that (i) it provides bounds on the average coherence of Gaussian matrices and Gabor frames, and (ii) it extends the results on model selection using OST to low-complexity, model-order agnostic recovery of sparse signals with arbitrary nonzero entries. In particular, this part of the analysis in the paper implies that an Alltop Gabor frame together with OST can successfully carry out model selection and recovery of sparse signals irrespective of the phases of the nonzero entries even if the number of nonzero entries scales almost linearly with the number of rows of the Alltop Gabor frame.

• 한국환경과학회지
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• 제17권1호
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• pp.113-118
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• 2008

[ $6{\sim}13mg/L$ ] base water concentration on monthly BOD has been kept at the Geukrak bridge point for this research target and it indicates the water quality under the existed rank. Due to this present condition of water quality, the demage of ecology from the upper stream to the lower one of the bridge could be conjectured. Moreover, nonstructural extinction of the ecology seems to have gotten worse between both the streams of Yeoungsan River. On this research, eco-corridor between the upper stream and the lower stream of the river should be ensured, the ecological demage needs to be cut off, a dispersed discharge method which the existed method of the 1st sewage plant in Gwangju was enhanced to should be inducted for the procuring of various water ecosystem, and the conditions by the scenario suggested from this research could be applied to a water quality model. then, analysis the improvement effect of the water quality adjacent the river. From the test result, Case3-Type1 scenario is thought to be the best one. From the test result with Case3-Type1 when the concentrated discharge was never done, 0.07 mg/L of BOD concentration was increased at the lower stream where Yeoungbon B point (Haksan Bridge) is but the water improvement effect of $0.24{\sim}2.87mg/L$ is thought to have been done at the area of water deterioration.

• 한국자동차공학회논문집
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• 제21권4호
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• pp.62-69
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• 2013

Visual demands associated with in-vehicle display usage and text messaging distract a driver's visual attention from the roadway. To minimize eyes-off-the-road demands, voice interaction systems are widely introduced. Under cognitively distracted condition, however, awareness of the operating environment will be degraded although the driver remains oriented to the roadway. It is also know that the risk of inattentive driving varies with age, thus systematic analysis of driving risks is required for the older drivers. This paper aims to understand the age-related driving performance degradation and visual attention changes under auditory cognitive demand which consists of three graded levels of cognitive complexity. In this study, two groups, aged 25-35 and 60-69, engaged in a delayed auditory recall task, so called N-back task, while driving a simulated highway. Comparisons of younger and older drivers' driving performance including mean speed, speed variability and standard deviation of lane position, and gaze dispersion changes, which consist of x-axis and y-axis of visual attention, were conducted. As a result, it was observed that gaze dispersion decreased with each level of demand, demonstrating that these indices can correctly rank order cognitive workload. Moreover, gaze dispersion change patterns were quite consistent in younger and older age groups. Effects were also observed on driving performance measures, but they were subtle, nonlinear, and did not effectively differentiate the levels of cognitive workload.